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Radioisotope Electric Propulsion For Fast Outer Planetary Orbiters
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721523597 Total Pages :30 pages Book Rating :4.5/5 (235 download)
Book Synopsis Radioisotope Electric Propulsion for Fast Outer Planetary Orbiters by : National Aeronautics and Space Administration (NASA)
Download or read book Radioisotope Electric Propulsion for Fast Outer Planetary Orbiters written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent interest in outer planetary targets by the Office of Space Science has spurred the search for technology options to enable relatively quick missions to outer planetary targets. Several options are being explored including solar electric propelled stages combined with aerocapture at the target and nuclear electric propulsion. Another option uses radioisotope powered electric thrusters to reach the outer planets. Past work looked at using this technology to provide faster flybys. A better use for this technology is for outer planet orbiters. Combined with medium class launch vehicles and a new direct trajectory these small, sub-kilowatt ion thrusters and Stirling radioisotope generators were found to allow missions as fast as 5 to 12 years for objects from Saturn to Pluto, respectively. Key to the development is light spacecraft and science payload technologies. Oleson, Steven and Benson, Scott and Gefert, Leon and Patterson, Michael and Schreiber, Jeffrey Glenn Research Center NASA/TM-2002-211893, NAS 1.15:211893, E-13575, AIAA Paper 2002-3967
Book Synopsis Compass Final Report by : National Aeronautics Administration
Download or read book Compass Final Report written by National Aeronautics Administration and published by CreateSpace. This book was released on 2014-11-16 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioisotope Electric Propulsion (REP) has been shown in past studies to enable missions to outer planetary bodies including the orbiting of Centaur asteroids. Key to the feasibility for REP missions are long life, low power electric propulsion (EP) devices, low mass Radioisotope Power System (RPS) and light spacecraft (S/C) components. In order to determine the key parameters for EP devices to perform these REP missions a design study was completed to design an REP S/C to orbit a Centaur in a New Frontiers (NF) cost cap. The design shows that an orbiter using several long lived (approx. 200 kg xenon (Xe) throughput), low power (approx. 700 W) Hall thrusters teamed with six (150 W each) Advanced Stirling Radioisotope Generators (ASRG) can deliver 60 kg of science instruments to a Centaur in 10 yr within the NF cost cap. Optimal specific impulses (Isp) for the Hall thrusters were found to be around 2000 s with thruster efficiencies over 40 percent. Not only can the REP S/C enable orbiting a Centaur (when compared to an all chemical mission only capable of flybys) but the additional power from the REP system can be used to enhance science and simplify communications.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721674299 Total Pages :30 pages Book Rating :4.6/5 (742 download)
Book Synopsis Neptune Orbiters Utilizing Solar and Radioisotope Electric Propulsion by : National Aeronautics and Space Administration (NASA)
Download or read book Neptune Orbiters Utilizing Solar and Radioisotope Electric Propulsion written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: In certain cases, Radioisotope Electric Propulsion (REP), used in conjunction with other propulsion systems, could be used to reduce the trip times for outer planetary orbiter spacecraft. It also has the potential to improve the maneuverability and power capabilities of the spacecraft when the target body is reached as compared with non-electric propulsion spacecraft. Current missions under study baseline aerocapture systems to capture into a science orbit after a Solar Electric Propulsion (SEP) stage is jettisoned. Other options under study would use all REP transfers with small payloads. Compared to the SEP stage/Aerocapture scenario, adding REP to the science spacecraft as well as a chemical capture system can replace the aerocapture system but with a trip time penalty. Eliminating both the SEP stage and the aerocapture system and utilizing a slightly larger launch vehicle, Star 48 upper stage, and a combined REP/Chemical capture system, the trip time can nearly be matched while providing over a kilowatt of science power reused from the REP maneuver. A Neptune Orbiter mission is examined utilizing single propulsion systems and combinations of SEP, REP, and chemical systems to compare concepts. Fiehler, Douglas I. and Oleson, Steven R. Glenn Research Center NASA/TM-2004-213220, E-14727, AIAA Paper 2004-3978
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781719497275 Total Pages :78 pages Book Rating :4.4/5 (972 download)
Book Synopsis Compass Final Report by : National Aeronautics and Space Administration (NASA)
Download or read book Compass Final Report written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-22 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radioisotope Electric Propulsion (REP) has been shown in past studies to enable missions to outer planetary bodies including the orbiting of Centaur asteroids. Key to the feasibility for REP missions are long life, low power electric propulsion (EP) devices, low mass Radioisotope Power System (RPS) and light spacecraft (S/C) components. In order to determine the key parameters for EP devices to perform these REP missions a design study was completed to design an REP S/C to orbit a Centaur in a New Frontiers (NF) cost cap. The design shows that an orbiter using several long lived (approx.200 kg xenon (Xe) throughput), low power (approx.700 W) Hall thrusters teamed with six (150 W each) Advanced Stirling Radioisotope Generators (ASRG) can deliver 60 kg of science instruments to a Centaur in 10 yr within the NF cost cap. Optimal specific impulses (Isp) for the Hall thrusters were found to be around 2000 s with thruster efficiencies over 40 percent. Not only can the REP S/C enable orbiting a Centaur (when compared to an all chemical mission only capable of flybys) but the additional power from the REP system can be used to enhance science and simplify communications. The mission design detailed in this report is a Radioisotope Power System (RPS) powered EP science orbiter to the Centaur Thereus with arrival 10 yr after launch, ending in a 1 yr science mapping mission. Along the trajectory, approximately 1.5 yr into the mission, the REP S/C does a flyby of the Trojan asteroid Tlepolemus. The total (Delta)V of the trajectory is 8.9 km/s. The REP S/C is delivered to orbit on an Atlas 551 class launch vehicle with a Star 48 B solid rocket stage Oleson, Steven R. and McGuire, Melissa L. Glenn Research Center CENTAUR LAUNCH VEHICLE; ELECTRIC PROPULSION; HALL THRUSTERS; TRAJECTORIES; SPECIFIC IMPULSE; ASTEROIDS; ATLAS LAUNCH VEHICLES; FLYBY MISSIONS; TROJAN ASTEROIDS; MASS; PLANETS; XENON
Book Synopsis Radioisotope Power Systems by : National Research Council
Download or read book Radioisotope Power Systems written by National Research Council and published by National Academies Press. This book was released on 2009-07-14 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spacecraft require electrical energy. This energy must be available in the outer reaches of the solar system where sunlight is very faint. It must be available through lunar nights that last for 14 days, through long periods of dark and cold at the higher latitudes on Mars, and in high-radiation fields such as those around Jupiter. Radioisotope power systems (RPSs) are the only available power source that can operate unconstrained in these environments for the long periods of time needed to accomplish many missions, and plutonium-238 (238Pu) is the only practical isotope for fueling them. Plutonium-238 does not occur in nature. The committee does not believe that there is any additional 238Pu (or any operational 238Pu production facilities) available anywhere in the world.The total amount of 238Pu available for NASA is fixed, and essentially all of it is already dedicated to support several pending missions-the Mars Science Laboratory, Discovery 12, the Outer Planets Flagship 1 (OPF 1), and (perhaps) a small number of additional missions with a very small demand for 238Pu. If the status quo persists, the United States will not be able to provide RPSs for any subsequent missions.
Book Synopsis 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 02-3950 - 02-3999 by :
Download or read book 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit: 02-3950 - 02-3999 written by and published by . This book was released on 2002 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space Technology and Applications International Forum - STAIF 2004 by : American Institute of Physics
Download or read book Space Technology and Applications International Forum - STAIF 2004 written by American Institute of Physics and published by American Institute of Physics. This book was released on 2004-02-18 with total page 1292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Albuquerque, New Mexico, 8-11 February 2004
Book Synopsis Outer Planet Exploration with Advanced Radioisotope Electric Propulsion by :
Download or read book Outer Planet Exploration with Advanced Radioisotope Electric Propulsion written by and published by . This book was released on 2002 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis COMPASS Final Report by : Steven R. Oleson
Download or read book COMPASS Final Report written by Steven R. Oleson and published by . This book was released on 2011 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit 10-13 July 2005, Tucson, Arizona: 05-3650 - 05-3699 by :
Download or read book 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit 10-13 July 2005, Tucson, Arizona: 05-3650 - 05-3699 written by and published by . This book was released on 2005 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit July 11-14, 2004, Fort Lauderdale, FL.: 04-3950 - 04-3999 by :
Download or read book 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit July 11-14, 2004, Fort Lauderdale, FL.: 04-3950 - 04-3999 written by and published by . This book was released on 2004 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Priorities in Space Science Enabled by Nuclear Power and Propulsion by : National Research Council
Download or read book Priorities in Space Science Enabled by Nuclear Power and Propulsion written by National Research Council and published by National Academies Press. This book was released on 2006-04-20 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2003, NASA began an R&D effort to develop nuclear power and propulsion systems for solar system exploration. This activity, renamed Project Prometheus in 2004, was initiated because of the inherent limitations in photovoltaic and chemical propulsion systems in reaching many solar system objectives. To help determine appropriate missions for a nuclear power and propulsion capability, NASA asked the NRC for an independent assessment of potentially highly meritorious missions that may be enabled if space nuclear systems became operational. This report provides a series of space science objectives and missions that could be so enabled in the period beyond 2015 in the areas of astronomy and astrophysics, solar system exploration, and solar and space physics. It is based on but does not reprioritize the findings of previous NRC decadal surveys in those three areas.
Book Synopsis 41st AIAA Aerospace Sciences Meeting & Exhibit by :
Download or read book 41st AIAA Aerospace Sciences Meeting & Exhibit written by and published by . This book was released on 2003 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Space Technology and Applications International Forum 2007 by : Mohamed S. El-Genk
Download or read book Space Technology and Applications International Forum 2007 written by Mohamed S. El-Genk and published by AIP Conference Proceedings (Nu. This book was released on 2007 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of STAIF-2007 feature a broad spectrum of topics on. These topics span the range from basic research to the most recent technology advances and hardware development and testing. The proceedings will be of particular interest to program managers, practicing engineers, academicians, graduate students, system designers, and researchers interested in the fields of space technology and space science.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721679263 Total Pages :30 pages Book Rating :4.6/5 (792 download)
Book Synopsis Radioisotope Electric Propulsion Missions Utilizing a Common Spacecraft Design by : National Aeronautics and Space Administration (NASA)
Download or read book Radioisotope Electric Propulsion Missions Utilizing a Common Spacecraft Design written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted that shows how a single Radioisotope Electric Propulsion (REP) spacecraft design could be used for various missions throughout the solar system. This spacecraft design is based on a REP feasibility design from a study performed by NASA Glenn Research Center and the Johns Hopkins University Applied Physics Laboratory. The study also identifies technologies that need development to enable these missions. The mission baseline for the REP feasibility design study is a Trojan asteroid orbiter. This mission sends an REP spacecraft to Jupiter s leading Lagrange point where it would orbit and examine several Trojan asteroids. The spacecraft design from the REP feasibility study would also be applicable to missions to the Centaurs, and through some change of payload configuration, could accommodate a comet sample-return mission. Missions to small bodies throughout the outer solar system are also within reach of this spacecraft design. This set of missions, utilizing the common REP spacecraft design, is examined and required design modifications for specific missions are outlined. Fiehler, Douglas and Oleson, Steven Glenn Research Center NASA/TM-2004-213357, IAC-04-IAA.3.6.4.01, E?14825
Download or read book Popular Mechanics written by and published by . This book was released on 2005-05 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
Download or read book Popular Mechanics written by and published by . This book was released on 2005-05 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.
